Binder ring opening device



Sept 2, 1952 c. D. TRUssELL v BINDER RING OPENING DEVICE Filed June 19, 1951 Imm: I M .EE

VEN TOR. Kiwa-sfu farra/v-Y Patented Sept. 2, 17952 A Clarence Di '.rurssel'lf'flrnwood, K l Application .time 19, 1951,- sriai-Nc-faaaelfz The' inventionf herein chanical bindings of the' type coveredin copend=` ingpatent application Serial No`.r.150,220;. led March. 17th, 1950; noW..Patent. No. 2,572,68I' of. October 23rd, 1951, in which ring formingngers projecting. "from one side of a tubular 'rib are biasedv to enter and. hold closedin slots provided inthe'oppositeside of'the'ribg- 1" .,fOb'jects oi 'the present invention, 'which is a' continuation'fin-part of the caseidentiiled, are toprovide simple and'. practical. mechanism' for opening and. holding. open, the. ring?. formingA nngersfor inserting'. ori removing.' the leavesl ori filler; .Y

; Other special objects of.l the-invention'are' to provide; a' ring: opener. of. thecharacter indicated which will'. open up the rings to the fullest ex; tent required' Without straining or' weakening'- the same; and; which will thereafter close' or enable propen. full: closing of the rings'.

Other. rdesirable .objects attained by' the irrven-A tion: are set: forth or will appearv in of.' the. following specification;

. The drawing' accompanying: andi iorlningl part of-.the spe'cication illustratesapresent practicalembodiment of' the".invetiorl.y f Structure; however, may be modified and-changed as regardsthe immediate illustrationj:.all1 therl'tii'i intent' and". broad scope' off thetinvention as heremanierv donned and: claimed; biblia; l inrftliel dra-Wing" is afb-roken and` ver"-L tioa'li-cros's' sectionalfviewloi? 'cinel of! the? present l ring.l opening. devices the open posi-tion., ad'- a mechanical binding of the' normally. closedring' type positioned therein, read-yto.havethe-'ririgsj n Fig. 3 is a broken top plan view of the' press" with th'eibindingdroppediinlposition therein preliminary to shifting it `to carry the rings into position under theringopeningpresser feet;

Fig.` 4A isl al broken vertical sectional' View? o'n disclosed relate's to.- me- '0 the course substantially the piane of liner-:4 of" Fiasll.

showing thefringsin thepreliminaryfposition lnserted between tlie press'e'rbars; u V

Figs '5" is a similar view" onsubstantiallyjthe planeofline-Eof Fig. 2,l with th'e ringsshiited andfthe bars pressing theA saineJl into the opened relation.

The mechanical binding shown is like that of the patent application above identified, comprising a tubular rib formation 1 having spaced i' The latterresult is. accomplished by forming theobmpanion *die*y members on: a curvature of greater radiusv than the. radiuslof they normally closed binder rings. Thus' thea-:effect of these cernpani'ondies is'to flatten out the .portions of the rings: gripped .between as shown inzFig. 2; Y

FgfZ'also shows" how Withonly those portions offthe ringsfnearestithe rib Vgrippedbetween the dies, these rootjportions of the ngersxwill be temporarily vilattenedl VWithout disturbing r the curvature oftherrend portions ofthe rings, so thataassoon as'DIeSsureis released Lthe resiliency of: thelmaterial Wi1l-caiise` the rings; to constrict' to th ei1'l normali `diarlrleter,11i/itil; the: f-reeendsy of thefvringsentering' thelkeeper slots 9 and being retained therein as before'f;

the dies,y substantially z fhepresser; bars lliV as show-n inFig. .3,1 arey spaced- ,inzparallelrelation sufficiently to permit entry of the 4 der `rings therebetween and have notches-@I2 theedees of thel same to admit the con-tinuonsportions of/ the-rings-Whenthe binde, ing is shifted in the direction of the arrow to carryfthe rootportionsof-y the rings beneath the presser-,haran A q z Y Y Eijg=-,4 shows-4 how' lthe bindingv may beA entered n-thfprese by dropninsither rings-.straight down through 5th@ space sf I3; between the; bars. This leaves the binding: freeV to be shifted longitudi-v` nall5-tofthegleft-in:Figxfbjn the direction of the arrow.f-tof` carry' the portions of the rings. seated inthe .die ,concavity directly beneath the bars,vas

showsfhow the concavey lower diei may be slotted. down fat .the-ione side.: at I 4;.- to admit. the' thinnerA portionsr 'lli` of;.tl'1'eA presser barsV Which are thus reduced in thickness to provide the notches l2.

The parallel bars Il of the upper die member are shown as having base portions I6 detachably 3 secured by screws I1 on the upper end of a ram or slide I8 operating vertically in 'a guideway I9 in a bed or table structure 20. This ram may be operated by power or by a pedal, after the manner of a foot press.

The spaced bars of the upper die serve as guides to direct the binding into proper position supported on the lower, concave die, and then only a slight longitudinal movement is required to locate the rings in position beneath the presser elements of the upper die.

The rings are opened with a simple attening therefore, the rings automatically close to the same, originally formed diameter.

The opening is accomplished without pulling or straining, so that it is not necessary to hold the convex die member and means for effecting reciprocating movement of said slide to move the i' presser bars toward and away from the convex die member.

r 3. A machine for opening the ringsjof a binderA having elastic rings tensioned in the fully closedl Arelation and comprising companion concave and convex die members of radius enough greater than the normal radius of the rings to relatively hatten portions of the rings engaged therebetween suiciently to open them without permamently deforming them, said convex die member tubular rib portion of the binding. It may 'be desirable to locate this rib in some approximate position near the ends of the presser bars, and for this purpose. the bars are shown concavely recessed at the ends, at 2I, against which the rib may be seated when the kbinding is first placed in the machine, as. in.Fg.,1.

'If found'desirable, the dieser either of them may be heated or cooled to avoid injury and to insure the .rings returning to their fully closed condition.

The presser bars, instead of being supported at oneside only in .a comb-like structure such as shown, may be supported at both ends.

As afurther alternative thepresser bars I I may be carried by a centrallydisposed slide, withthe slots I4 extending partly or full length acrossthe lower concave die I0. This construction avoids a side ram orrams ,and provides a direct downward movement witha centered ram.

What. is claimed is:

l. A machine for opening the normally. closed rings of a binder having a tubular rib andelastio iingers forming rings projecting from the side of the same and comprising companion concave and convex die membersof radiusenough greater than the normal radius Vof the rings to relatively hatten portions of .the rings engaged therebetween sufciently tofopen them withoutl permanently deforming them and said convex die memberbeing composed Aof presserV bars spacedl to admit the ringsof thebinder therebetween and having clearances for therings'at one side to permit longitudinal shifting vof the binder to carry the rings into position between the convex presser barsand the concave die member andY means for relatively approaching said die members to effect the partial flattening and opening of therings andfor then separatingthe die members to permit-the rings lto close.- H

y 2. LA machine for opening the normally closed rings of a binder having a tubular rib and'elastic fingers formingrings-projecting from Ythe side-of the same and comprising' companion concave and convex .die members-of radius enough greater than the normal radius of the Vrings to relatively flatten portions ot theA rings' engaged therebetween sufficiently tou open them without permanently deforming them and said convex die member being composed of presser bars spaced-to admit the rings of the binder therebetween' and having clearances for the rings at one side to permit longitudinal shifting of the binder to carry being composed of presser bars spaced to admit the rings of the binder therebetween and having clearances to permit longitudinal shifting of the binder, to carrythe rings into position between the convex presser bars and the concave die member anda ram forl operatingsaid convex die member toward and away fromthe concave die memberr.' .y

4. A machine for opening the normally closed rings of a binder having a tubular rib and elastic n'gers forming rings projecting from the side of the same and comprising companion concave and convexl "die members of radius enough greater than the normal radius of the rings to relatively flatten portions of the rings engaged therebetween suiciently to open. them without permanently deforming them and said convex die member being composed of presser bars spaced to admitv the rings of the binder therebetween and having clearances for the rings to permit longi-` tudinal shifting of the binder to carry the rings into position between the convex presser bars and v the concave die member anda stop shoulder at one end of the presser bars for engagement by the tubular `rib of the binder to locate the binder with portions of the ringsadjoining the tubular. rib in position vfor relative flattening engagement between the presser bars and concave die member and krneansior relatively approaching and separating the die members to effect opening and closing movements of the rings.

5, A machine for opening the rings of a binder having elastic ringsV vtensioned in the fully closed relationA andcomprising companion concave and convex die members of radius enough greater than the normal radius of the rings in the closed relation to partly atten portions of the rings engaged therebetween suiciently to open the rings without deforming the same, means yconnecting said convex presser bars together in position to 'engageinside the binder rings and means for effecting movement of said yconvex presser bars toward and away from said concave, die msmber CLARENCE D. TRUSSELL.

, REFERENCES CITED The following references are of record in the fllepfjhis patent:

UNITED sfrrlrrEs PATENTS estatal 'rrusse1i" oct, 33,1951 

